"The time has come," the Walrus said,
"To talk of many things:
Of shoes--and ships--and sealing-wax--
Of cabbages--and kings--
And why the sea is boiling hot--
And whether pigs have wings."
The Walrus and The Carpenter
Lewis Carroll
(from Through the Looking-Glass and What Alice Found There, 1872)

Monday, February 14, 2011

Managed some hours on the WPX RTTY this year and made a few contacts. Was able to hold a frequency and run quite a bit more than is 'normal' for my small station. On Sunday the last 4-5 hours was mostly 'running'. The N1MM program was working except the band map was not filling with spots for some reason. The station used was Cushcraft R7 vertical, MK V and Alpha 78.

Wednesday, February 2, 2011

ATS-4a is now finished and fully operational. The audio coupling Cap C55 was a problem that I solved by putting an additional .1uf in parallel with the existing cap. Some folks have suggested swapping C55 and C61. In any case it seems that C55 needs to be larger in value for the audio chain to provide adequate output. At this point I am getting about three watts output at 12V with a weak 9V battery in the Oak Hills QRP Wattmeter into a dummy load.

ATS-4 Finished

ATS-4 Top

ATS-4 Bottom

Today the missing (lost) 'Red' SMD Cap came in the mail. The last component was added and the unit was inspected and looks ready for final assembly and testing.

Thanks for this group and thanks Steve for nice job.
Now Built my small nice ATS4 A. Good CW tone , Pout 5-6W and only 15 m 4W. Good RX.
Note:
Not used liquid flux for switches, C55 really 1.0 uF, C46 0.01 uf
BS170, 2N7002 careful to do solder - not good for static
73 Serge